/// <summary>
/// Read cell data from the data source and fill the passed cell list. This
/// method will raise an exception if 1) a supercell ID in the database is not
/// found in the Background assigned to this class (ArgumentException exception) or
/// 2) a cell is assigned a reference to a neighbour that does not exist
/// (ArgumentException exception).
/// </summary>
/// <param name="Cells">
/// The cell list to fill. The cells are added to any that are already in the
/// list. An ArgumentNullException exception is raised if Cells is null.
/// </param>
/// <param name="SuperCells">
/// A list of Supercells that these cells will belong to. An ArgumentNullException
/// is raised if SuperCells is null. An ArgumentException is raised if SuperCells
/// is an empty list.
/// </param>
public void GetCellData(cCellList Cells, cSuperCellList Supercells)
{
// make sure Cells is not null
if (Cells == null)
{
throw new ArgumentNullException("Cells", "Cells must not be null.");
}
// make sure Supercells is not null
if (Supercells == null)
{
ThrowSupercellsException();
}
// the supercell list must contain at least one super cell
if (Supercells.Count == 0)
{
throw new ArgumentException("Supercell list must contain at least one supercell.",
"Supercells");
}
// retrieve the name of this list of cells
Cells.Name = this.GetName();
// create a cell data object
cCellData CellData = new cCellData();
// loop, loading cell data one at a time
this.Reset();
while (this.GetNextCellRecord(CellData))
{
// create the new cell
cCell Cell = new cCell(CellData.ID, Supercells[CellData.SuperCellID],
CellData.K, CellData.XLoc, CellData.YLoc);
Cells.Add(Cell);
}
// loop again, this time assigning neighbours. If an invalid refence exception
// is thrown, then the neighbour ID is invalid.
this.Reset();
while (this.GetNextCellRecord(CellData))
{
// loop through the six neighbour positions
for (int i = 0; i < 6; i++)
{
// note: if the neighbour value in the datasource is "b", this indicates
// that the neighbour is on the bouandary
if (CellData.Neighbours[i] == "b")
{
Cells[CellData.ID].SetNeighbour((enumNeighbourPosition)i, null);
}
else
{
Cells[CellData.ID].SetNeighbour((enumNeighbourPosition)i,
Cells[CellData.Neighbours[i]]);
}
}
}
}
/// <summary> /// Retrieves a single cell record from the data source and places it in the /// passed cell data object. /// </summary> /// <param name="Data">The cell data object that will contain the cell data.</param> /// <returns> /// True if the retrieval was successful, False if there are no more records to /// retrieve. /// </returns> protected abstract bool GetNextCellRecord(cCellData Data);
